64223642 has 8 divisors (see below), whose sum is σ = 110097696. Its totient is φ = 27524412.

The previous prime is 64223641. The next prime is 64223669. The reversal of 64223642 is 24632246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (64223641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2293688 + ... + 2293715.

It is an arithmetic number, because the mean of its divisors is an integer number (13762212).

Almost surely, 2^64223642 is an apocalyptic number.

64223642 is a deficient number, since it is larger than the sum of its proper divisors (45874054).

64223642 is a wasteful number, since it uses less digits than its factorization.

64223642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587412.

The product of its digits is 13824, while the sum is 29.

The square root of 64223642 is about 8013.9654354134. The cubic root of 64223642 is about 400.4653791789.

Adding to 64223642 its reverse (24632246), we get a palindrome (88855888).

The spelling of 64223642 in words is "sixty-four million, two hundred twenty-three thousand, six hundred forty-two".